#!/usr/bin/python

import datetime

def simple_timing():
    start = datetime.datetime.now()
    print "start", start
    try:
	while True:
	    line = raw_input()
	    now = datetime.datetime.now()
	    print "now  ", now, "running", now - start
    except KeyboardInterrupt:
	pass
    except EOFError:
	pass
    stop = datetime.datetime.now()
    print "stop ", stop, "running", stop - start


simple_timing()
